* There are several parameters in many of the commands that bear further
* explanations:
*
- * Two of the commands (imm and imw) take a byte/word/long modifier
- * (e.g. imm.w specifies the word-length modifier). This was done to
- * allow manipulating word-length registers. It was not done on any other
- * commands because it was not deemed useful.
- *
* {i2c_chip} is the I2C chip address (the first byte sent on the bus).
* Each I2C chip on the bus has a unique address. On the I2C data bus,
* the address is the upper seven bits and the LSB is the "read/write"
* {addr} field (since .1 is the default, it doesn't actually have to
* be specified). Examples: given a memory chip at I2C chip address
* 0x50, the following would happen...
- * imd 50 0 10 display 16 bytes starting at 0x000
+ * i2c md 50 0 10 display 16 bytes starting at 0x000
* On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd>
- * imd 50 100 10 display 16 bytes starting at 0x100
+ * i2c md 50 100 10 display 16 bytes starting at 0x100
* On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd>
- * imd 50 210 10 display 16 bytes starting at 0x210
+ * i2c md 50 210 10 display 16 bytes starting at 0x210
* On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd>
* This is awfully ugly. It would be nice if someone would think up
* a better way of handling this.
#endif
-static int
-mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]);
+/* TODO: Implement architecture-specific get/set functions */
+unsigned int __def_i2c_get_bus_speed(void)
+{
+ return CONFIG_SYS_I2C_SPEED;
+}
+unsigned int i2c_get_bus_speed(void)
+ __attribute__((weak, alias("__def_i2c_get_bus_speed")));
+
+int __def_i2c_set_bus_speed(unsigned int speed)
+{
+ if (speed != CONFIG_SYS_I2C_SPEED)
+ return -1;
+
+ return 0;
+}
+int i2c_set_bus_speed(unsigned int)
+ __attribute__((weak, alias("__def_i2c_set_bus_speed")));
/*
* Syntax:
- * imd {i2c_chip} {addr}{.0, .1, .2} {len}
+ * i2c md {i2c_chip} {addr}{.0, .1, .2} {len}
*/
#define DISP_LINE_LEN 16
length = i2c_dp_last_length;
if (argc < 3) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
if (argv[2][j] == '.') {
alen = argv[2][j+1] - '0';
if (alen > 4) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
break;
return 0;
}
-int do_i2c_mm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- return mod_i2c_mem (cmdtp, 1, flag, argc, argv);
-}
-
-int do_i2c_nm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- return mod_i2c_mem (cmdtp, 0, flag, argc, argv);
-}
/* Write (fill) memory
*
* Syntax:
- * imw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
+ * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
*/
int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int j;
if ((argc < 4) || (argc > 5)) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
if (argv[2][j] == '.') {
alen = argv[2][j+1] - '0';
if (alen > 4) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
break;
/*
* Wait for the write to complete. The write can take
* up to 10mSec (we allow a little more time).
- *
- * On some chips, while the write is in progress, the
- * chip doesn't respond. This apparently isn't a
- * universal feature so we don't take advantage of it.
*/
/*
* No write delay with FRAM devices.
#if !defined(CONFIG_SYS_I2C_FRAM)
udelay(11000);
#endif
-
-#if 0
- for (timeout = 0; timeout < 10; timeout++) {
- udelay(2000);
- if (i2c_probe(chip) == 0)
- break;
- }
-#endif
}
return (0);
/* Calculate a CRC on memory
*
* Syntax:
- * icrc32 {i2c_chip} {addr}{.0, .1, .2} {count}
+ * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count}
*/
int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
int j;
if (argc < 4) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
if (argv[2][j] == '.') {
alen = argv[2][j+1] - '0';
if (alen > 4) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
break;
/* Modify memory.
*
* Syntax:
- * imm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
- * inm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
+ * i2c mm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
+ * i2c nm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
*/
static int
extern char console_buffer[];
if (argc != 3) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
if (argv[2][j] == '.') {
alen = argv[2][j+1] - '0';
if (alen > 4) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
break;
/*
* Syntax:
- * iprobe {addr}{.0, .1, .2}
+ * i2c probe {addr}{.0, .1, .2}
*/
int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
/*
* Syntax:
- * iloop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
+ * i2c loop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
* {length} - Number of bytes to read
* {delay} - A DECIMAL number and defaults to 1000 uSec
*/
int j;
if (argc < 3) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
if (argv[2][j] == '.') {
alen = argv[2][j+1] - '0';
if (alen > 4) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
break;
/*
* Syntax:
- * sdram {i2c_chip}
+ * i2c sdram {i2c_chip}
*/
int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
};
if (argc < 2) {
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 1;
}
/*
}
#endif
-#if defined(CONFIG_I2C_CMD_TREE)
-int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
-{
- i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
- return 0;
-}
-
#if defined(CONFIG_I2C_MUX)
int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
+ /* Strip off leading 'i2c' command argument */
+ argc--;
+ argv++;
+
#if defined(CONFIG_I2C_MUX)
- if (!strncmp(argv[1], "bu", 2))
- return do_i2c_add_bus(cmdtp, flag, --argc, ++argv);
+ if (!strncmp(argv[0], "bu", 2))
+ return do_i2c_add_bus(cmdtp, flag, argc, argv);
#endif /* CONFIG_I2C_MUX */
- if (!strncmp(argv[1], "sp", 2))
- return do_i2c_bus_speed(cmdtp, flag, --argc, ++argv);
+ if (!strncmp(argv[0], "sp", 2))
+ return do_i2c_bus_speed(cmdtp, flag, argc, argv);
#if defined(CONFIG_I2C_MULTI_BUS)
- if (!strncmp(argv[1], "de", 2))
- return do_i2c_bus_num(cmdtp, flag, --argc, ++argv);
+ if (!strncmp(argv[0], "de", 2))
+ return do_i2c_bus_num(cmdtp, flag, argc, argv);
#endif /* CONFIG_I2C_MULTI_BUS */
- if (!strncmp(argv[1], "md", 2))
- return do_i2c_md(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "mm", 2))
- return do_i2c_mm(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "mw", 2))
- return do_i2c_mw(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "nm", 2))
- return do_i2c_nm(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "cr", 2))
- return do_i2c_crc(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "pr", 2))
- return do_i2c_probe(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "re", 2))
- return do_i2c_reset(cmdtp, flag, --argc, ++argv);
- if (!strncmp(argv[1], "lo", 2))
- return do_i2c_loop(cmdtp, flag, --argc, ++argv);
+ if (!strncmp(argv[0], "md", 2))
+ return do_i2c_md(cmdtp, flag, argc, argv);
+ if (!strncmp(argv[0], "mm", 2))
+ return mod_i2c_mem (cmdtp, 1, flag, argc, argv);
+ if (!strncmp(argv[0], "mw", 2))
+ return do_i2c_mw(cmdtp, flag, argc, argv);
+ if (!strncmp(argv[0], "nm", 2))
+ return mod_i2c_mem (cmdtp, 0, flag, argc, argv);
+ if (!strncmp(argv[0], "cr", 2))
+ return do_i2c_crc(cmdtp, flag, argc, argv);
+ if (!strncmp(argv[0], "pr", 2))
+ return do_i2c_probe(cmdtp, flag, argc, argv);
+ if (!strncmp(argv[0], "re", 2)) {
+ i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+ return 0;
+ }
+ if (!strncmp(argv[0], "lo", 2))
+ return do_i2c_loop(cmdtp, flag, argc, argv);
#if defined(CONFIG_CMD_SDRAM)
- if (!strncmp(argv[1], "sd", 2))
- return do_sdram(cmdtp, flag, --argc, ++argv);
+ if (!strncmp(argv[0], "sd", 2))
+ return do_sdram(cmdtp, flag, argc, argv);
#endif
- else
- printf ("Usage:\n%s\n", cmdtp->usage);
+ cmd_usage(cmdtp);
return 0;
}
-#endif /* CONFIG_I2C_CMD_TREE */
/***************************************************/
-#if defined(CONFIG_I2C_CMD_TREE)
U_BOOT_CMD(
i2c, 6, 1, do_i2c,
- "i2c - I2C sub-system\n",
+ "I2C sub-system",
+ "speed [speed] - show or set I2C bus speed\n"
#if defined(CONFIG_I2C_MUX)
- "bus [muxtype:muxaddr:muxchannel] - add a new bus reached over muxes.\n"
+ "i2c bus [muxtype:muxaddr:muxchannel] - add a new bus reached over muxes\n"
#endif /* CONFIG_I2C_MUX */
- "speed [speed] - show or set I2C bus speed\n"
#if defined(CONFIG_I2C_MULTI_BUS)
"i2c dev [dev] - show or set current I2C bus\n"
#endif /* CONFIG_I2C_MULTI_BUS */
"i2c crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
"i2c probe - show devices on the I2C bus\n"
"i2c reset - re-init the I2C Controller\n"
- "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n"
+ "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device"
#if defined(CONFIG_CMD_SDRAM)
- "i2c sdram chip - print SDRAM configuration information\n"
+ "\n"
+ "i2c sdram chip - print SDRAM configuration information"
#endif
);
-#endif /* CONFIG_I2C_CMD_TREE */
-U_BOOT_CMD(
- imd, 4, 1, do_i2c_md, \
- "imd - i2c memory display\n", \
- "chip address[.0, .1, .2] [# of objects]\n - i2c memory display\n" \
-);
-
-U_BOOT_CMD(
- imm, 3, 1, do_i2c_mm,
- "imm - i2c memory modify (auto-incrementing)\n",
- "chip address[.0, .1, .2]\n"
- " - memory modify, auto increment address\n"
-);
-U_BOOT_CMD(
- inm, 3, 1, do_i2c_nm,
- "inm - memory modify (constant address)\n",
- "chip address[.0, .1, .2]\n - memory modify, read and keep address\n"
-);
-
-U_BOOT_CMD(
- imw, 5, 1, do_i2c_mw,
- "imw - memory write (fill)\n",
- "chip address[.0, .1, .2] value [count]\n - memory write (fill)\n"
-);
-
-U_BOOT_CMD(
- icrc32, 5, 1, do_i2c_crc,
- "icrc32 - checksum calculation\n",
- "chip address[.0, .1, .2] count\n - compute CRC32 checksum\n"
-);
-
-U_BOOT_CMD(
- iprobe, 1, 1, do_i2c_probe,
- "iprobe - probe to discover valid I2C chip addresses\n",
- "\n -discover valid I2C chip addresses\n"
-);
-
-/*
- * Require full name for "iloop" because it is an infinite loop!
- */
-U_BOOT_CMD(
- iloop, 5, 1, do_i2c_loop,
- "iloop - infinite loop on address range\n",
- "chip address[.0, .1, .2] [# of objects]\n"
- " - loop, reading a set of addresses\n"
-);
-
-#if defined(CONFIG_CMD_SDRAM)
-U_BOOT_CMD(
- isdram, 2, 1, do_sdram,
- "isdram - print SDRAM configuration information\n",
- "chip\n - print SDRAM configuration information\n"
- " (valid chip values 50..57)\n"
-);
-#endif
#if defined(CONFIG_I2C_MUX)
projects / u-boot / blobdiff